Using a form-release agent on wood forms and plastic form liners is an inexpensive and effective way to minimize the number of times concrete will stick to them. The only caution is to be careful not to overuse the release, as excess may drip or puddle inside the forms.
When selecting a concrete release agent for wood forms, choose one that is formulated for wide-ranging wood forms and will not color the concrete. Most commercial oils are very effective and will penetrate the wood to a certain extent while leaving the surface only marginally greasy.
If the concrete release agent is applied by swabbing, painting or wiping, the majority of airborne particulates can be eliminated. However, this method of application can produce a heavier coat than needed and generally results in excess release agent that drips or dries to the floor.
A specialized concrete form release agent is available in a water-based formula that provides a waterproof coating to protect steel, aluminum, fiberglass and wood forms from corrosion and prevents the accumulation of concrete residue on forms. The cleaner, non-corrosive formula reduces prep time and the amount of concrete that dries on forms.
The TK line of form-release agents includes two unique formulas: chemically active and clean release. Both contain fatty acids that react with the alkalinity of concrete to help minimize prep-time, preserve the soundness of mold materials and expedite clean-up.